<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">
        ￥{{goods_info.goods_price}}
      </view>
      <!-- 商品信息主体信息 -->
      <view class="goods-info-body">
        <!-- 商品的名字 -->
        <view class="goods-name">
          {{goods_info.goods_name}}
        </view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import {mapMutations,mapGetters} from 'vuex'
  export default {
	computed:{
		// 映射store中的计算属性total
		...mapGetters('m_cart',['total'])
	},
	watch:{
		// // 动态计算购物车商品总数量
		// total(newVal) {
		// 	const findResult = this.options.find(x=>x.text === '购物车')
		// 	if(findResult) {
		// 		findResult.info = newVal
		// 	}
		// }
		total:{
			handler(newVal) {
				const findResult = this.options.find(x=>x.text === '购物车')
				if(findResult) {
					findResult.info = newVal
				}
			},
			immediate:true
		}
	},
    data() {
      return {
		//商品信息
        goods_info:{},
		// 底部商品导航
        options: [
			{
				icon: 'shop',
				text: '店铺',
				infoBackgroundColor:'#007aff',
				infoColor:"red"
			}, {
				icon: 'cart',
				text: '购物车',
				info: 0
			}],
			buttonGroup: [{
			  text: '加入购物车',
			  backgroundColor: '#ff0000',
			  color: '#fff'
			},
			{
			  text: '立即购买',
			  backgroundColor: '#ffa200',
			  color: '#fff'
			}
        ]
      }
    },
    onLoad(options) {
	  // 接收商品Id
      const goods_id = options.goods_id
	  // 调用方法，获取商品信息
      this.getGoodsDetail(goods_id)
    },
    methods:{
		// 映射方法
		...mapMutations('m_cart',['addToCart']),
		//拿到商品详情的方法 
	  async getGoodsDetail(goods_id) {
		 //调用接口获取商品信息 
         const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
         if(res.meta.status !== 200) return uni.$showMsg()
		 // 优化商品详情图片
         res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"').replace(/webp/g,'jpg')
		 // 存储商品信息
         this.goods_info = res.message
      },
	  // 查看商品大图
      preview(i) {
        uni.previewImage({
          current:i,
          urls:this.goods_info.pics.map(x => x.pics_big)
        })
      },
	  // 左侧按钮点击事件
      onClick(e) {
		// 点击购物车按钮
        if(e.content.text === "购物车") {
          uni.switchTab({
            url:'/pages/cart/cart'
          })
        }
      },
	  // 点击右侧按钮事件
	  buttonClick(e) {
		  if(e.content.text === '加入购物车') {
			// 组织商品对象信息
			// { goods_id, goods_name, goods_price, goods_count, goods_small_logo, goods_state }
			const goods = {
				goods_id:this.goods_info.goods_id,
				goods_name:this.goods_info.goods_name,
				goods_price:this.goods_info.goods_price,
				goods_count:1,
				goods_small_logo:this.goods_info.goods_small_logo,
				goods_state:true	
			}
			// 调用addToCart方法
			this.addToCart(goods)
		  }
	  }
    }
  }
</script>

<style lang="scss">
swiper{
  height: 750rpx;
  image{
    height: 100%;
    width: 100%;
  }
}
.goods-info-box{
  padding: 10px;
  padding-right: 0;
  .price{
    color:#C00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi{
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      width: 120px;
      font-size: 12px;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  .yf{
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
}
  .goods_nav{
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
  .goods-detail-container{
    padding-bottom: 50px;
  }
</style>
